RESEARCH ARTICLE


Delay Measurement of Manually Controlled Intersection Using GPS



S. Nithya*, 1, D. Senthurkumar2, K. .Gunasekaran3
1 Research Scholar, Division of Transportation Engineering, Anna University, Chennai-25, Tamil Nadu, India
2 Former PG Student, Division of Transportation Engineering, Anna University, Chennai-25, Tamil Nadu, India
3 Associate Professor, Division of Transportation Engineering, Anna University, Chennai-25, Tamil Nadu, India


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Creative Commons License
© 2014 Nithya et al;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Research Scholar, Division of Transportation Engineering, Anna University, Chennai-25, Tamil Nadu, India; Tel:+91-44-28351126; Fax: +91-44-42085184; E-mail: nithya@measiarch.net


Abstract

The travel time studies are one of the most important measures used for evaluating the performance of road networks. The Global Positioning System (GPS) is a space-based system that provides position and time information in all weather conditions. GPS data could be used to obtain the values of traffic control delay, vehicle queue, average travel time and vehicle acceleration and deceleration at intersections.The task of estimation of delay becomes complex if it is performed for intersections carrying heterogeneous traffic and that to for over saturated conditions. Most of the urban signalized intersections are manually controlled during peak hours. GPS device fitted in a vehicle was run repeatedly during morning peak period and the period during which vehicles were allowed to cross the intersection was recorded with video graphic camera. The attempt to identify the control delay with the GPS data from the test vehicle while crossing manually operated major intersection is presented in this paper.

Keywords: Control delay, GPS, queue length, travel time.